I think stop loss is better than you loss all your money, is not worry when you loss chance to get profit with trading but better you use stop loss when your prediction is not running well and you still have chance to get recovery another time with other coin although half of your money from stop loss, but if you keep continue without stop loss exactly on future trading, you will get liquid and nothing you can get after all your assets loss, you need fresh money again to start trading. I think almost trader spot or future always use stop loss to protect with bitcoin and altcoin situation always have bad news and wrong analyze with our prediction.